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经营范围
发明名称
EDUCATIONAL AID
摘要
申请公布号
ZA9109393(B)
申请公布日期
1992.08.26
申请号
ZA19910009393
申请日期
1991.11.28
申请人
ISIS (PROPRIETARY) LIMITED
发明人
KENNETH BRIGGS
分类号
G06F;G09B
主分类号
G06F
代理机构
代理人
主权项
地址
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